Witnesses said several gunmen fired at least 20 shots at a group gathered at Cornell Square Park, on the 1800 block of W. 51st Street, shortly before 10:15 p.m. The spray of bullets sent a mass of people to the ground on the basketball courts.

"Man, I think it was like an AK. It was a lot of shots. Like, 'Boom, boom, boom, boom, boom, boom, boom,'" said one witness who identified himself as Josh.

The victims included 10 males and three females, including 3-year-old Deonta Howard -- known as "Tay-man" -- who was shot in the jaw at listed in critical condition as of 3 a.m. The boy was with his mother. She was not injured, a police spokesman said.

Chicago Police Superintendent on Park Shooting

Supt. Garry McCarthy said the bullets that wounded 13 people in a south side park came from an assault-style rifle, and he reiterated his call for gun legislation that includes stronger background checks, a crackdown on so-called straw purchases and a ban on high-capacity magazines.

(Published Friday, Sept. 20, 2013)

Most recently, a shooting in the Portage Park neighborhood left a man in his 20s with a gunshot wound to the foot, according to Chicago Police News Affairs Officer Daniel O'Brien.

The man was shot around 1:52 p.m. in the 3700 block of North Mobile Avenue and was taken to Our Lady of Resurrection Medical Center in good condition, O'Brien said.

A teen was fatally shot minutes earlier around 1:35 p.m. in the 6900 block of South Vernon Avenue.

The teen was shot in the back and pronounced dead at the scene, O'Brien said.

Earlier Friday, a 25-year-old man was shot in the chest around 12:45 a.m. in the 3600 block of West Augusta Boulevard.

Police said they responded to a call of shots fired and discovered the man shot on the sidewalk.

The man was transported to Stroger Hospital in critical condition and was later pronounced dead.

The victim was identified as Rubin Austin, 25, according to the medical examiner's office.

Around 2 a.m., a 23-year-old man was shot near 75th Street and Michigan Avenue.

The man was walking down the street when an armed offender exited a white vehicle and announced robbery, police said.

The victim pulled out a handgun and both the victim and offender shot each other, police said.

The victim was shot in his side and taken to Advocate Christ Medical Center in critical condition.

The shooter, a 28-year-old man, was shot in the leg and listed in stable condition at Stroger Hospital.

On Thursday, a teen was shot in the foot around 6:35 p.m. in the 700 block of West 72nd Street.

The teen was transported to Advocate Christ Medical Center in good condition, police said.

Less than a half hour later, two men were shot in the 5700 block of South Hamlin Avenue.

A 24-year-old man suffered a graze wound to the thigh and a 26-year-old man was shot in the stomach.

Both men were taken to Advocate Christ Medical Center in stable condition, according to Chicago Police News Affairs.

Minutes later, a 36-year-old man was shot multiple times near 77th Street and Sangamon Avenue.

Police said the man was shot in the upper body and was taken to Stroger Hospital in critical condition.

The man, identified by the medical examiner’s office as Johnny Tinsey, was later pronounced dead.

Just after 7:15 p.m., a 28-year-old man was shot in the stomach in the 5700 block of South Aberdeen Street in the Englewood neighborhood, police said.

He was taken in serious condition to Stroger Hospital, according to authorities.

About 10:30 p.m. Thursday, a 21-year-old man was shot in both legs in the 5500 block of West North Avenue.

The victim was taken to Advocate Illinois Masonic Medical Center for treatment, O'Brien said.

Later Thursday, a woman was killed in shooting at 79th and Wood Streets. The woman, in her late 20s, was later pronounced dead but her identity was not being released, according to the Cook County medical examiner's office.